I have a 1" brass ball shut off valve between the house water service and a lawn sprinkler system. It was installed about 20 years ago and has been working fine ever since - no leaks, etc.
As I normally do at this time of the year, I blew out the sprinkler system with compressed air to winterize it. Now I see a slow drip coming from an open outdoor drain valve located between the ball valve and the sprinkler backflow preventer. It appears there is a leak between the ball & it's seal inside of the valve. It is slow - about 4 - 5 seconds between drips. On the exterior of the ball valve, there are no signs of leaks or anything unusual (stem packings, solder joints, etc.).
What can be causing this sort of leak & what will it take to fix it?
Richard
As I normally do at this time of the year, I blew out the sprinkler system with compressed air to winterize it. Now I see a slow drip coming from an open outdoor drain valve located between the ball valve and the sprinkler backflow preventer. It appears there is a leak between the ball & it's seal inside of the valve. It is slow - about 4 - 5 seconds between drips. On the exterior of the ball valve, there are no signs of leaks or anything unusual (stem packings, solder joints, etc.).
What can be causing this sort of leak & what will it take to fix it?
Richard